Integrating Primavera with a JDEdwards database

 At my company, our JD Edwards accounting database  connects to the  Primavera database by using the Activity ID and WBS. This is a problem because frequently our customer dictates the Activity Codes and or the WBS in our schedules. This forces us into duplicate schedules in order to have a project schedule that works with our back office accounting system and comply with customer requirements. Has anyone had any experience using Cost Accounts or an Activity Code as the connection to JDE or another ERP database? I think this would be a better idea and I woud like to consider it